Spirit AeroSystems Holdings, Inc. (Holdings) is an independent non- original equipment manufacturer (OEM) aircraft parts designers and manufacturers of commercial aerostructures. The Company operates in three segments: Fuselage Systems, which includes forward, mid and rear fuselage sections; Propulsion Systems, which includes nacelles, struts/pylons and engine structural components, and Wing Systems, which includes wing systems and components, flight control surfaces and other miscellaneous structural parts. The Company is an independent supplier of aerostructures to The Boeing Company (Boeing). In addition, it is an independent suppliers of aerostructures to Airbus S.A.S. (Airbus). The Company is engaged in production of the majority of the airframe content for the Boeing B737. In addition, it is a content supplier of wing systems for the Airbus A320 family. It is a supplier for the Airbus A380. In April 2012, it opened a 55,000-square-foot manufacturing facility in Chanute, Kansas.